Added documentation to example
Added documentation to example

This fixes #16, by adding documentation to TestCreateAndReadFile.
It also tests that the output is the expected, so the simulation will
fail if it is not the expected output.

modelica-3rdparty/msgpack-modelica,tbeu/msgpack-modelica,modelica-3rdparty/msgpack-modelica,modelica-3rdparty/msgpack-modelica,tbeu/msgpack-modelica,tbeu/msgpack-modelica,tbeu/msgpack-modelica,modelica-3rdparty/msgpack-modelica,tbeu/msgpack-modelica